D8R D8N Dozer Undercarriage Parts Track Roller for Caterpillar D8R Bulldozer

The track rollers produced by our company are suitable for small excavators and heavy excavators and bulldozers from 0.2-120 tons. There are single flange and double flange models, and they are suitable for special road milling machines, pavers, forestry and agricultural applications.Version Roller.

Double yard seal design, can make the track rollers have longer life, better performance, durable and long-lasting.

The roller is a part that requires high wear resistance, so we not only need to carry out quenching and tempering treatment to make its internal structure uniform and fine. The hardness reaches HRC52. And if the wear resistance is not high, pass-through quenching treatment will also be carried out to improve the wear resistance of the rollers.

Bottom Roller :forging material(50MN) Cover material （QT450）Shaft （45#）

Degree of depth ：5mm（Shaft1.5-2mm）Hardness：HRC55-60

Roller body: Forging--Turning operation--Quenching--Fine Turing operation --pressure bushing--- welding slag shovel （clean up the body surface）

Shaft: Forging-- turning operation-- Mill--Quenching--Grinding

Side cover ：Forging--Turning operation--Fine Turning operation--Pressure Bushing--Welding--Slag Shovel

All parts ready to: Assembly-Pressure Test Filling Oil --Spray Paint --Checking --Storage